Where can I pull 12V Ignition power from ?

Reply Subscribe

Thread Tools

Search this Thread

Mar 8, 2007 | 10:48 AM

Vic'89

Thread Starter

Safety Car

Joined: Jun 2000

Posts: 4,870

Likes: 25

From: Long Island, NY

Where can I pull 12V Ignition power from ?

I need a 12V power supply that only supplies power once the car is running.
Does anyone know what I can tap into easily in the Drivers side of an L98.

Thanks

Vic

Mar 8, 2007 | 11:19 AM

scranage

Burning Brakes

Joined: Nov 2005

Posts: 908

Likes: 1

From: Colorado Springs Colorado

Common line on the injectors is ignition hot. I prefer to put in a seperate fuse block with a relay myself, but the other is obviously easier.

Mar 8, 2007 | 11:22 AM

Aardwolf

Race Director

Joined: Jun 2004

Posts: 13,966

Likes: 709

From: WI

Cig. lighter? Power seat wires?

Mar 8, 2007 | 04:59 PM

Keystring

Drifting

Joined: Aug 2006

Posts: 1,624

Likes: 2

From: Canandaigua New York

My radiator cooling fan was wired to the windshield wiper harness.

Only comes on when the key is on.

Mar 8, 2007 | 05:03 PM

mseven

Le Mans Master

Joined: Feb 2005

Posts: 5,146

Likes: 3

From: The Motor City

I am using the AIR for 02(now discontinued on car) and used the electrical (fsm v.2) to find and tap into the wiring harness going to the ECM as switched sources for shift light etc.

Mar 8, 2007 | 06:53 PM

C4Techie

Racer

Joined: May 2006

Posts: 293

Likes: 0

Quote:

Originally Posted by Vic'89

I need a 12V power supply that only supplies power once the car is running.
Thanks

Vic

A switched 12 volt power supply is one thing, but only when running complicates matters. You could come off of the oil pressure switch if your usage will tolerate the 2 second feed from the fuel pump relay when the ignition switch is turned to on. Otherwise you could add another oil pressure switch.